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43444 = 2210861
BaseRepresentation
bin1010100110110100
32012121001
422212310
52342234
6533044
7240442
oct124664
965531
1043444
112a705
1221184
1316a0b
1411b92
15cd14
hexa9b4

43444 has 6 divisors (see below), whose sum is σ = 76034. Its totient is φ = 21720.

The previous prime is 43441. The next prime is 43451. The reversal of 43444 is 44434.

43444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 35344 + 8100 = 188^2 + 90^2 .

It is a super-2 number, since 2×434442 = 3774762272, which contains 22 as substring.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5427 + ... + 5434.

243444 is an apocalyptic number.

It is an amenable number.

43444 is a deficient number, since it is larger than the sum of its proper divisors (32590).

43444 is a wasteful number, since it uses less digits than its factorization.

43444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10865 (or 10863 counting only the distinct ones).

The product of its digits is 768, while the sum is 19.

The square root of 43444 is about 208.4322431871. The cubic root of 43444 is about 35.1541500145.

Adding to 43444 its reverse (44434), we get a palindrome (87878).

Subtracting 43444 from its reverse (44434), we obtain a triangular number (990 = T44).

The spelling of 43444 in words is "forty-three thousand, four hundred forty-four", and thus it is an iban number.

Divisors: 1 2 4 10861 21722 43444